I don't know the status of either film, but there's some artwork floating about that looks good. I don't know who the artist is.

Here's a visual development sketch of the SnowQueen from the project of the same name at Disney. I like this technique as I've used it quite a bit in the past and in my book. Black line over blue pencil.

There's also video on YouTube that shows art which appears to be from Disney's 'King of the Elves'. Sorry about the sound track, there's nothing much I can do about it except suggest that you mute it if it's a distraction to you.